The NICA (Nuclotron-based Ion Collider fAcility) project is under realization at the Joint Institute for Nuclear Research (JINR, Dubna). The main goal of the project is a study of hot and dense ...strongly interacting matter in heavy ion collisions (up to Au) in the energy range up to sNN=11 GeV. Two modes of operation are foreseen, collider and extracted beam operations, with two detectors: MPD and BM@N. In the Au + Au collider mode the expected average luminosity is L=1027cm−2s−1. The proposed experimental program allows one to search for possible manifestations of the phase transitions and critical phenomena.
Abstract
The NICA facility is under active realization at the Joint Institute for Nuclear Research (JINR, Dubna). Its main goal includes experimental studies of hot and dense baryon rich matter ...forming in heavy ion collisions to search for possible manifestations of phase transitions and critical phenomena, as well as investigation of nucleon spin structure with polarized proton and deuteron beams. The NICA general design, construction status, and prospects for physics program are presented.
After observing and investigating the double-exotic (a double-exotic atom is a bound system, in which both oppositely charged components are unstable particles like μ,π,K,…) π+π− atom with the ground ...state lifetime τ of about 3×10−15 s, the upgraded DIRAC experiment at the CERN PS accelerator observes for the first time long-lived states of the same atom with lifetimes of about 10−11 s and more. The number of characteristic pion pairs resulting from the breakup (ionisation) of long-lived π+π− atoms amounts to 436±61, corresponding to a signal-to-error ratio of better than 7 standard deviations. This observation opens a new possibility to measure energy differences between p and s atomic states and so to determine ππ scattering lengths.
Three Stages of the NICA Accelerator Complex Kekelidze, V D; Lednicky, R; Matveev, V A ...
Journal of physics. Conference series,
01/2016, Letnik:
668, Številka:
1
Journal Article
Recenzirano
Odprti dostop
The Nuclotron-based Ion Collider fAcility (NICA) project is under development at JINR (Dubna). The general goals of the project are to provide colliding beams for experimental studies of both hot and ...dense strongly interacting baryonic matter and spin physics (in collisions of polarized protons and deuterons). The first program will require the running of heavy ion mode in the energy range of √sNN = 4÷11 GeV at an average luminosity of L = 1*1027 cm-2-s-1 for 197Au79 nuclei. This stage of the project will be preceded by fixed target experiments with the heavy ion beam to be extracted from the Nuclotron at kinetic energies up to 4.5 GeV u. The polarized beam mode is proposed to be used in the energy range of √sNN = 12÷27 GeV (protons) at luminosities up to 1 * 1032 cm-2-s-1. This report contains a brief description of the facility scheme and characteristics in the heavy ion operation mode, the description of the MultiPurpose Detector (MPD), and characteristics of the reactions of the colliding ions, which will allow us to detect the mixed phase formation. The plans and status of the project development are presented.
Status of the NICA project at JINR Kekelidze, V.; Kovalenko, A.; Lednicky, R. ...
EPJ Web of Conferences,
01/2015, Letnik:
95
Journal Article, Conference Proceeding
Recenzirano
Odprti dostop
The NICA (Nuclotron-based Ion Collider fAcility) project is now under active realization at the Joint Institute for Nuclear Research (JINR, Dubna). The main goal of the project is a study of hot and ...dense strongly interacting matter in heavy ion (up to Au) collisions at the centre-of-mass energies up to 11 GeV per nucleon. Two modes of operation are foreseen, collider mode and extracted beams, with two detectors: MPD and BM@N. The both experiments are in preparation stage. An average luminosity in the collider mode is expected as 10E27 cm-2 s-1 for Au (79+). Extracted beams of various nucleus species with maximum momenta of 13 GeV/c (for protons) will be available. A study of spin physics with extracted and colliding beams of polarized deuterons and protons at the energies up to 27 GeV (for protons) is foreseen with the NICA facility. The proposed program allows one to search for possible signs of phase transitions and critical phenomena as well as to shed light on the problem of the nucleon spin structure.
The NICA Project at JINR Dubna Kekelidze, V.; Kovalenko, A.; Lednicky, R. ...
EPJ Web of conferences,
01/2014, Letnik:
71
Journal Article
Recenzirano
Odprti dostop
New scientific program is proposed at the Joint Institute for Nuclear Research (JINR) in Dubna aimed at study of hot and dense baryonic matter in the wide energy range from 2 GeV/amu to radicals ...sub(NN) = 11 GeV, and investigation of the nucleon spin structure with the maximum polarized protons and deuterons energy in the c.m. 27 GeV (for protons). To implement this program the development of JINR's accelerator facility in high energy physics has started. This facility is based on the existing superconducting synchrotron - Nuclotron. The program foresees both experiments at beams extracted from the Nuclotron, and construction of an ion collider - the Nuclotron-based Ion Collider fAcility (NICA).
Status of the NICA project at JINR Kekelidze, V.; Kovalenko, A.; Lednicky, R. ...
EPJ Web of Conferences,
01/2016, Letnik:
126
Journal Article, Conference Proceeding
Recenzirano
Odprti dostop
The project NICA (Nuclotron-based Ion Collider fAcility) is aimed to study hot and dense baryonic matter in heavy ion collisions in the energy range up to √sNN = 11 GeV, and to study nucleon spin ...structure in polarized proton and deuteron collisions in the energy range up to √s = 27 GeV. The heavy ion program will be performed at the Nuclotron extracted beams with the BM@N (Baryonic Matter at Nuclotron) set-up and with the MPD (MultiPurpose Detector) at the NICA collider with the average luminosity of L = 1027 cm−2s−1 (for 197Au79+). The spin physics will be studied with the SPD (Spin Physics Detector) at the NICA collider.
The project NICA (Nuclotron-based Ion Collider fAcility) is aimed to study hot and baryon rich QCD matter in heavy ion collisions in the energy range up to sNN=11GeV. The heavy ion program includes a ...study of collective phenomena, dilepton, hyperon and hypernuclei production under extreme conditions of highest baryonic density. This program will be performed at a fixed target experiment BM@N and with MPD detector at the NICA collider.
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